Control method and control system for heavy-duty vehicle electric wheel system, and electric vehicle

A control method and technology of electric wheels, which are applied in the field of systems and control methods of electric vehicles and heavy-duty vehicle electric wheel systems, can solve the problems of not giving full play to the advantages of the electric wheel system, and the control process of electric wheels is not reasonable and efficient.

Inactive Publication Date: 2020-04-28
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For heavy-duty vehicles, it requires greater driving force and braking force. However, in the driving and braking process of current electric heavy-duty vehicles, the control process of electric wheels

Method used

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  • Control method and control system for heavy-duty vehicle electric wheel system, and electric vehicle
  • Control method and control system for heavy-duty vehicle electric wheel system, and electric vehicle
  • Control method and control system for heavy-duty vehicle electric wheel system, and electric vehicle

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Embodiment Construction

[0067] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0068] Such as figure 1 As shown, a control method of a heavy-duty vehicle electric wheel system in the present invention includes service brake control, parking brake control, electric wheel fault control and driving condition control.

[0069] Such as figure 2 As shown, for the service brake control, it includes the following process:

[0070] S101. Collect the current vehicle speed.

[0071] S102. Select the corresponding braking mode according to the current vehicle speed and the limited vehicle speed. If the vehicle speed is lower than the limited vehicle speed, each electric wheel is braked by a combination of electric motor braking and hydraulic brake braking, which can ensure low-spe...

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PUM

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Abstract

The invention discloses a control method and a control system for a heavy-duty vehicle electric wheel system, and an electric vehicle. The method comprises the following steps: a current vehicle speedis collected when electric wheels are braked; and a corresponding braking mode is selected according to the current vehicle speed and a limited vehicle speed, if the vehicle speed is smaller than thelimited vehicle speed, each electric wheel is braked in the mode of combining motor braking and hydraulic brake braking, and if the vehicle speed is larger than the limited vehicle speed, each electric wheel is braked only through a hydraulic brake. The braking system has the following advantages: different braking modes can be selected according to the current working condition during service braking, a motor brake can be effectively protected against damage, the service life is prolonged, braking energy can be recycled, the endurance mileage is increased, and the safety of a driver is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of motors, and in particular relates to a control method and system for an electric wheel system of a heavy vehicle and an electric vehicle. Background technique [0002] With the development of science and technology and the increasingly stringent environmental protection requirements, electrification has become one of the inevitable trends in vehicle development. For electric vehicles, distributed drive has received more and more attention in the industry. Compared with centralized drive, distributed drive can directly drive the wheels to rotate, with short drive chain, simple chassis structure and high transmission efficiency. The advantages of wheel independent control have brought new ideas to the design and control of the vehicle. Distributed drive vehicles can also be called wheeled robots. [0003] For heavy-duty vehicles, it requires greater driving force and braking force. However, in the driving ...

Claims

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Application Information

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IPC IPC(8): B60L15/20B60T13/58B60T13/74
CPCB60L15/2009B60L2240/12B60L2240/421B60L2240/429B60L2250/26B60T13/58B60T13/74Y02T10/72
Inventor 付翔朱子旭裴彪徐超吴森
Owner WUHAN UNIV OF TECH
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